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-rw-r--r--arch/s390/include/asm/spinlock.h9
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/s390/include/asm/spinlock.h b/arch/s390/include/asm/spinlock.h
index 217ee5210c32..8182b521c42f 100644
--- a/arch/s390/include/asm/spinlock.h
+++ b/arch/s390/include/asm/spinlock.h
@@ -92,10 +92,11 @@ static inline void arch_spin_unlock(arch_spinlock_t *lp)
{
typecheck(int, lp->lock);
asm volatile(
- "st %1,%0\n"
- : "+Q" (lp->lock)
- : "d" (0)
- : "cc", "memory");
+#ifdef CONFIG_HAVE_MARCH_ZEC12_FEATURES
+ " .long 0xb2fa0070\n" /* NIAI 7 */
+#endif
+ " st %1,%0\n"
+ : "=Q" (lp->lock) : "d" (0) : "cc", "memory");
}
/*